Abstract: Self-aligning mechanisms hold a condenser housing. The condenser housing is moved toward an integrator while tapered surfaces of the condenser housing of an LED light source unit are inserted along condenser lens guides of a projection unit. LED light source unit datum surfaces and datum surfaces of the projection unit abut against each other, and the tapered surfaces of the LED light source unit can no longer move toward the integrator along the condenser lens guides of the projection unit. In this state, the LED light source unit and the projection unit are coupled to each other.

Abstract: A video display device includes a light guide unit for guiding outgoing light from a light source unit to a pixel area of a display device. The light guide unit includes a rod integrator having an input opening through which the outgoing light from the light source unit enters and an output opening provided on a side opposite to the input opening, and a light shielding plate provided between the input opening of the rod integrator and the light source unit. The light shielding plate has a plurality of types of openings for passing the outgoing light from the light source unit to the rod integrator. The light shielding plate is arranged in a state where one of the plurality of types of openings, which has a shape similar to that of the input opening of the rod integrator which is actually mounted, is aligned with the input opening.

Abstract: A work to replace a display panel body is facilitated. A display apparatus includes a display panel unit (20) having a display panel body (22) that displays an image, and a panel supporting member (40) that is attached to the display panel unit (20) and that supports the display panel unit (20), wherein the display panel unit (20) has handles (36 to 39), and the handles (36 to 39) are at least partially exposed outside of the panel supporting member (40).

Abstract: A video display device includes a light guide unit for guiding outgoing light from a light source unit to a pixel area of a display device. The light guide unit includes a rod integrator having an input opening through which the outgoing light from the light source unit enters and an output opening provided on a side opposite to the input opening, and a light shielding plate provided between the input opening of the rod integrator and the light source unit. The light shielding plate has a plurality of types of openings for passing the outgoing light from the light source unit to the rod integrator. The light shielding plate is arranged in a state where one of the plurality of types of openings, which has a shape similar to that of the input opening of the rod integrator which is actually mounted, is aligned with the input opening.

Abstract: A package structure prevents an optical sheet from being brought into contact with a display panel and making scratches on the display panel due to motion caused during transport of a display device, thereby minimizing cost increase. A package structure for a thin display device is the structure for storing the thin display device in a package case. The thin display device includes at least one optical sheet situated in approximately parallel with its display surface, and the package case includes a storage member for holding a thin display device with the optical sheet having a surface inclined relative to a vertical direction.

Abstract: Self-aligning mechanisms hold a condenser housing. The condenser housing is moved toward an integrator while tapered surfaces of the condenser housing of an LED light source unit are inserted along condenser lens guides of a projection unit. LED light source unit datum surfaces and datum surfaces of the projection unit abut against each other, and the tapered surfaces of the LED light source unit can no longer move toward the integrator along the condenser lens guides of the projection unit. In this state, the LED light source unit and the projection unit are coupled to each other.

Abstract: A light source device (10) includes a lamp unit (1) and a lamp cartridge (2) in which the lamp unit (1) is housed. The lamp unit (1) includes a discharge lamp (11), a reflection mirror (12) and a transparent plate (13). The reflection mirror (12) has ventilation openings (121). The lamp cartridge (2) has ventilation openings (214, 215 and 231). Fragment-passage prevention members (30, 31 and 32) are provided on the ventilation openings (214, 215 and 231). The fragment-passage prevention members (30) allow the passage of the air but prevent the passage of the fragments of the discharge lamp (11). With such an arrangement, it is possible to prevent the fragments from being scattered out of the lamp cartridge (2), even when the breakage of the discharge lamp (11) occurs.

Abstract: A light source device (100) includes a discharge lamp (1), a reflection mirror (2), a transparent plate (3) and a case (7). The reflection mirror (2) has inlet openings (4a, 4b) and outlet openings (5a, 5b) formed in the vicinity of the front end of the reflection mirror (2). The case (7) has outlet openings (7a, 7b) disposed on the front side of the reflection mirror (2), and an inlet opening (7c) disposed on the rear side of the reflection mirror (2). The inlet opening (7c) of the case (7) allows an air to flow into the case (7) and to flow along a back surface (2b) of the reflection mirror (2). The inlet openings (4a, 4b) of the reflection mirror (2) allow the air to flow into the interior of the reflection mirror (2). The outlet openings (5a, 5b) of the reflection mirror (2) and the outlet openings (7a, 7b) of the case (7) allow the air to be exhausted out of the case (7).

Abstract: A light source device includes a first spheroidal mirror having first and second focal points, and a light source unit having a plurality of semiconductor light emitting elements radially disposed on a support with respect to the axis of rotation of the first spheroidal mirror. Light beams from the semiconductor light emitting elements pass through the second focal point, reflect from the inner surface of the first spheroidal mirror, and are focused to the first focal point, and the axis of rotation and the light emission central axis of each of the semiconductor light emitting elements form an angle of 90 degrees or greater. The light source unit is removably attached to an opening provided at a non-reflective portion of the first spheroidal mirror so as to form an illumination unit.

Abstract: A package structure prevents an optical sheet from being brought into contact with a display panel and making scratches on the display panel due to motion caused during transport of a display device, thereby minimizing cost increase. A package structure for a thin display device is the structure for storing the thin display device in a package case. The thin display device includes at least one optical sheet situated in approximately parallel with its display surface, and the package case includes a storage member for holding a thin display device with the optical sheet having a surface inclined relative to a vertical direction.

Abstract: A work to replace a display panel body is facilitated. A display apparatus includes a display panel unit (20) having a display panel body (22) that displays an image, and a panel supporting member (40) that is attached to the display panel unit (20) and that supports the display panel unit (20), wherein the display panel unit (20) has handles (36 to 39), and the handles (36 to 39) are at least partially exposed outside of the panel supporting member (40).

Abstract: A light source device includes a first spheroidal mirror having first and second focal points, and a light source unit having a plurality of semiconductor light emitting elements radially disposed on a support with respect to the axis of rotation of the first spheroidal mirror. Light beams from the semiconductor light emitting elements pass through the second focal point, reflect from the inner surface of the first spheroidal mirror, and are focused to the first focal point, and the axis of rotation and the light emission central axis of each of the semiconductor light emitting elements form an angle of 90 degrees or greater. The light source unit is removably attached to an opening provided at a non-reflective portion of the first spheroidal mirror so as to form an illumination unit.

Abstract: A light source device (10) includes a lamp unit (1) and a lamp cartridge (2) in which the lamp unit (1) is housed. The lamp unit (1) includes a discharge lamp (11), a reflection mirror (12) and a transparent plate (13). The reflection mirror (12) has ventilation openings (121). The lamp cartridge (2) has ventilation openings (214, 215 and 231). Fragment-passage prevention members (30, 31 and 32) are provided on the ventilation openings (214, 215 and 231). The fragment-passage prevention members (30) allow the passage of the air but prevent the passage of the fragments of the discharge lamp (11). With such an arrangement, it is possible to prevent the fragments from being scattered out of the lamp cartridge (2), even when the breakage of the discharge lamp (11) occurs.

Abstract: A light source device (100) includes a discharge lamp (1), a reflection mirror (2), a transparent plate (3) and a case (7). The reflection mirror (2) has inlet openings (4a, 4b) and outlet openings (5a, 5b) formed in the vicinity of the front end of the reflection mirror (2). The case (7) has outlet openings (7a, 7b) disposed on the front side of the reflection mirror (2), and an inlet opening (7c) disposed on the rear side of the reflection mirror (2). The inlet opening (7c) of the case (7) allows an air to flow into the case (7) and to flow along a back surface (2b) of the reflection mirror (2). The inlet openings (4a, 4b) of the reflection mirror (2) allow the air to flow into the interior of the reflection mirror (2). The outlet openings (5a, 5b) of the reflection mirror (2) and the outlet openings (7a, 7b) of the case (7) allow the air to be exhausted out of the case (7).

Abstract: A video-displaying apparatus uses a rod integrator that converts light emitted from a light source into uniform light. The apparatus includes a rod integrator, a holding member, and a flat spring. The rod integrator has a first surface, a second surface that opposes the first surface, a third surface, and a fourth surface that opposes the third surface. The holding member has a first contact surface which abuts the second surface, and a second contact surface which abuts the fourth surface. The first and second contact surfaces have smaller areas than the second and fourth surfaces, respectively. The rod integrator is fixedly mounted to the holding member such that the rod integrator is sandwiched between the holding member and the flat spring mounted to the holding member. Only the projections formed in the spring abut the first and third surfaces.

Abstract: A video-displaying apparatus uses a rod integrator that converts light emitted from a light source into uniform light. The apparatus includes a rod integrator, a holding member, and a flat spring. The rod integrator has a first surface, a second surface that opposes the first surface, a third surface, and a fourth surface that opposes the third surface. The holding member has a first contact surface which abuts the second surface, and a second contact surface which abuts the fourth surface. The first and second contact surfaces have smaller areas than the second and fourth surfaces, respectively. The rod integrator is fixedly mounted to the holding member such that the rod integrator is sandwiched between the holding member and the flat spring mounted to the holding member. Only the projections formed in the spring abut the first and third surfaces.

Abstract: A disc apparatus for recording information to and reproducing information from a disc includes a turntable with a magnetized surface; an excitation coil disposed opposite the magnetized surface of the turntable; a drive circuit driving a focus actuator; a detector detecting focusing error; and a control circuit. The control circuit controls energization of the excitation coil in accordance with the detector so as to move the turntable in the axial direction via the magnetic force between the excitation coil and the magnetized turntable.

Abstract: An automatic disc-changing apparatus is for selectively transporting cartridge holders capable of accommodating a plurality of cartridges containing discs for the recording of information from a standby position to a recording and reproducing position, or from recording and reproducing position to standby position, transporting any single cartridge. This apparatus comprises cartridge holders for holding the cartridges; a holding mechanism for standby, for holding the cartridge holder in the standby position; a holding mechanism for transport, for holding the cartridge holder for transport; a transfer mechanism for moving it horizontally to the front and rear; and an elevator mechanism for raising and lowering holding mechanism for transport. This apparatus is compact, of simple configuration and convenient to use.

Abstract: An automatic disc-changing apparatus for selectively transporting cartridge holders from a standby position to a recording and reproducing position, or from a recording and reproducing position to a standby position. The cartridge holders are capable of accommodating a plurality of cartridges containing discs to record information thereon and thereby transport any single cartridge. The automatic disc-changing apparatus comprises a plurality of cartridge holders for holding the cartridges; a standby-holding mechanism for holding the cartridge holder in the standby position; a transport-holding mechanism for selectively engaging with the cartridge holder for transport; a transfer mechanism for moving the transport-holding mechanism horizontally to the front and rear of the apparatus; and an elevator mechanism for raising and lowering the transport-holding mechanism. This apparatus is compact, simple in configuration and convenient to use.

Abstract: After separating the moving and fixed parts of a mechanism conceptual view, the apparatus moves and/or rotates the movable parts. The movable and fixed parts are synthesized and dynamically displayed to illustrate the motion of the machine represented by the mechanism conceptual view. Symbols arranged at different angles in a selection area of a display are used to create the mechanism conceptual view, and a coding device in the apparatus codes the mechanism conceptual view for transmission over a telephone line.